AirHint found the following cheapest return flights from London (LTN) to Perth (PER) in August 2025 (see full year).

Return flights

25 Aug - 08 Sep	easyJet
20 Aug - 30 Sep	easyJet
04 Aug - 11 Aug	easyJet
11 Aug - 19 Aug	easyJet
01 Aug - 03 Aug	easyJet
14 Aug - 21 Aug	easyJet
12 Aug - 19 Aug	Wizz Air UK
06 Aug - 13 Aug	Wizz Air UK
04 Aug - 25 Aug	easyJet
04 Aug - 01 Sep	easyJet
22 Aug - 02 Sep	easyJet
08 Aug - 17 Aug	easyJet
05 Aug - 19 Aug	Ryanair
05 Aug - 12 Aug	Ryanair
01 Aug - 01 Sep	easyJet
02 Aug - 01 Sep	Ryanair

Also check the deals for one-way flights from London to Perth in August.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from London to Perth in August from 900€

Return flights